API Spec 5L Steel Pipe

API Spec 5L is an international standard that specifies the manufacturing requirements for two product specification grades (PSL 1 and PSL 2) of seamless and welded steel pipes used in pipeline transportation systems in the oil and gas industry.

Product Parameters

API-5L welded spiral steel pipe is made of hot-rolled strip or steel plate as raw material. The strip or steel plate is rolled into a round or special-shaped steel pipe by a forming machine, and then the formed steel pipe is butt welded by a high-frequency welding unit. PSL1 and PSL2 pipelines have different levels of quality requirements. This kind of steel pipe has the advantages of high strength, high toughness, corrosion resistance, and easy welding. API Spec 5L steel pipes are commonly used to manufacture pipeline steel pipes in the oil and gas industry.


Product Parameters

Product NameAPI Spec 5L Steel Pipe
StandardEN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer DiameterSeamless: 1/4"-36"Welding: 21.3mm-3620mm
Round Tube: 1/2"-10"Square Tube/Rectangular Tube: 15x15mm-400x600mm
Wall ThicknessSeamless: 1.25mm-50mmWelding: 1.65mm-65mm
Length3-12 meters, Support customization
Surface ProcessBright, Polished, Black
Other ServicesMachining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

 

Chemical Composition

API Spec 5L PSL 1BrandCMnPS
B≤ 0.28≤ 1.20≤ 0.030≤ 0.030
X42≤ 0.28≤ 1.30≤ 0.030≤ 0.030
X46≤ 0.28≤ 1.40≤ 0.030≤ 0.030
X52≤ 0.28≤ 1.40≤ 0.030≤ 0.030
API Spec 5L PSL 2B≤ 0.24≤ 1.20≤ 0.025≤ 0.015
X42≤ 0.24≤ 1.30≤ 0.025≤ 0.015
X46≤ 0.24≤ 1.40≤ 0.025≤ 0.015
X52≤ 0.24≤ 1.40≤ 0.025≤ 0.015

 

Mechanical Properties

StandardBrandYield Strength (MPa)Tensile Strength (MPa)
API Spec 5L PSL 1A25172310
A207331
B241414
X42290414
X46317434
X52359455
X56386490
X60414517
X65448531
X70483565
API Spec 5L PSL 2B290-496414-758
X42317-524434-758
X46359-531455-758
X52386-544490-758
X56414-565517-758
X60448-600531-758
X65483-621565-758
X70552-690621-827


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